1. Cellular and Molecular Biology Research Center, Shahid Beheshti University, M.C., Tehran, Iran.
2. Anatomy Department, Shahid Beheshti University, M.C., Tehran, Iran.
3. Medical Faculty, Shahid Beheshti University, M.C., Tehran, Iran.
4. Pathology Department, Ayatoallah Taleghani Hospital, Shahid Beheshti University, M.C., Tehran, Iran.